@article{MZ_1977__155_172540,
     author = {Rainer L\"owen},
     title = {Schleiermachers {Starrheitsbedingung} f\"ur {Projektivit\"aten} in der {Topologischen} {Geometric.}},
     journal = {Mathematische Zeitschrift},
     pages = {23--28},
     publisher = {mathdoc},
     volume = {155},
     year = {1977},
     zbl = {0354.50003},
     url = {http://geodesic.mathdoc.fr/item/MZ_1977__155_172540/}
}